Worst case, offer him in writing that if he moves out in 14 days (the specific date needs to be on the written offer, don't just say "14 days"), you will pay him $500 (or whatever you think will get him to leave).

Secondly I am concerned about your existing home being rented since you probably get it as a place to live and not make it an investment. 

Don't leave your pocket open or someone will put their hand in it.

My goal was to leave the refi with no or very little cash in the place but I am not sure the ARV will hit the price point I am thinking. 

Most lenders main concern will be the as is value in relation to how much money you need. 

And one tenant rented to someone who's a heavy smoker leaving cigarette butts all over, and when I question him about it, shrug his shoulders.

No to real estate investment for the timebeing for me at least ( temporary)Because I already invested and I want to see how the market is doing, I want to learn more, networking.I am against real estate gurus who says invest in big amount and leave your job bla bla bpa, first when you invest in big amount and you do have cash the interest rate will be huge and this decrease your profit and yield/ cap , also high yield mean high risk second real estate as any business have good time and bad time so leaving your sustainable job and depends mainly on real estate investment is quite risky method, if one could generate double or triple his income real estate this is something else, I don't think typical person could rich quickly without high risk

If you have a concern, are you able to talk to them? 

I'm having a similar concerns >>>>> https://www.biggerpockets.com/forums/50/topics/733343-using-a-hardmoney-loan-to-purchase-property-at-point-of-auctions

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